... of trauma, surgical wounds, infected wounds / wound, such as burn wounds, purulent wound / wound, sinus, fistula; difficult to heal wounds ... open fracture, etc.PATENT TECHNOLOGY*XN-HW Ultrasonic Wound Debrider designed independence possess China sciential property right ... bacteria,viruses,fungs and necrotic tissue in wound, and prompt wound healing by special low frequency ultrasonic power loading ...